How do i have chlamydia and my boyfriend doesnt?

Hello, i was recently diagnosed with chlamydia and i took the antibiotics as did my boyfriend, when he took his he had to take a test too. His test came back today as negative.
I have been with my boyfriend for 3 years with a six month break and only slept with him in this time. he however had slept around... so i presumed i had caught it off him and went mad at him!!! But he showed me the text from the clinic saying his was negative today... how on earth does that work?
How is it possible that i have chlamydia and he doesnt? I have been tested before i got with him and i was negative.

I dont understand how even if i was the initial person with chlamydia how in such a long time i will not of passed it onto him?
Helppp meeeee... im so frustrated.

Some men can contract chlamydia but not actually get the disease but just be carriers of it so I've been told, if your really worried ask your doc about it especially as seeing youve been tested prior and haven't slept with anyone but him.

The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.